RedBot Assembly Guide Rev 02

This Tutorial is Retired!

This tutorial covers concepts or technologies that are no longer current. It's still here for you to read and enjoy, but may not be as useful as our newest tutorials.

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Motors

In this section, you will be placing the two motors on the bottom side of the bottom chassis piece.

Locate the Following:

1x Bottom Chassis Piece 4x Motor Holder 2x Motor
Bottom Chassis Piece Motor Holder Motor
2x 4-40 x 1 1/4" Flat Head Screw 2x 4-40 Hex Nut
Screw - Flat Head M3 Nut

Please note: ** Pay close attention to which screws you are using. There are two different screws in the RedBot Kit. (30x** of the 4-40 x 1/4" Phillips screw and 4x of the 4-40 x 1 1/4" flat head screw).

Adding the RedBot Sensor - Mechanical Bumper? You will have 3x of the 4-40 x ⅜" Phillips screw.

Adding the Motors

Find the correct location on the bottom chassis piece.

Bottom Motor Graphic

Place one of the motor holders through the chassis at that location.

Motor holder in the correct spot

Push the motor holder all the way down.

Motor holder placed down

Place the first motor on the bottom side of the chassis piece. It is important to make sure the side of the motor with the wheel encoder is pointing to the back side of the RedBot bottom chassis piece. To tell the difference between the back and front of the chassis, the chassis's back is flat and the chassis's front is curved. (The back of the chassis is where the metal ball caster will go. You will be putting that on later.)

Line up the two motor holes with the two motor holder holes. Make sure that the red wire soldered onto the motor is on top and away from the chassis piece.

Motor placed on board

Place the 4-40 x 1 1/4" flat head screw through the top motor holder and motor holes.

Screw going through top hole

Using a screwdriver and 4-40 hex nut, tighten the screw.

Using screwdriver to tighten screw

Double check the side of the motor with the wheel encoder is pointing to the back side of the RedBot bottom chassis piece.

Following the same steps as the first motor, add the second motor holder on the other side.

Second motor screwed in

Place the motor's black and red wires through the bottom chassis so the wires come through to the top side of the chassis.

Motor jumper wires through chassis holes holes

Now, push the wheel encoder's wires through to the top side of the chassis. It is best to push through the chassis opening that is closest to the motor, as shown below.

Encoder jumper wires though chassis holes

As you can see, the wires are now through the top of the chassis piece. It is highly recommended to have the wires push through the same chassis openings as shown below. This way it is easier to connect to the RedBot Mainboard toward the end.

Top view of chassis with jumper wires out